He represented Perth South in the Legislative Assembly of Ontario from 1902 to 1904 and from 1908 to 1911 as a Liberal member.
He was born in East Zorra Township, Oxford County, Canada West, the son of Conrad (Johann Konrad) Stock, a German immigrant originally from Wallersdorf, Grebenau, Grand Duchy of Hesse.
After suffering an injury working on the family farm, he earned a teacher's certificate and taught school in East Zorra and Tavistock.
He set up his own business in Tavistock and later, with a partner, formed a company selling flax there.
He was an unsuccessful candidate in an 1899 provincial by-election in Perth South; he defeated Samuel Nelson Monteith in the general election held in 1902.